Cassander Cassijn Engelen

1 Introduction Deciding where and when to forage is crucial for the survival of animals. These decisions do not only impact the animals themselves, but also other components of the ecosystem. Large herbivores, for example, can influence ecosystems by altering vegetation biomass and structure, which in turn has cascading effects on other species (Adler et al. 2001; Côté et al. 2004).